After Rendering the lighting is missing

pkappetein

I did my 1st rendering With the Nvidia Iray,   but the image is missing all the lightning I had (1 light)   but had it centered to a spot and the rest darker,  

but there is no such effect.

I checked the settings, and everything seems to be on

What am i missing?

SpottedKitty

Iray has a default Environment light which might be overpowering the light you added. If you want to turn it off, go into the Render tab, click on Environment, and change the Environment Mode setting from Dome And Scene to Scene Only.

One other thing, about the settings on the spotlight. Note that when you switch to the Iray renderer, any standard lights will automatically switch to Photometric Mode with extra controls. You should only use these Iray settings, if you try to change the Iray and 3Delight settings at once, your lighting might not quite behave the way you think it should.

pkappetein

Hi,

I tried changing Environment Mode setting from Dome And Scene to Scene Only and now the rendering took only 30 seconds, and have a black screen, and nothing else.

Then I changed to 3Delight, and that was fast but the quality is a lot worse then the Iray one.

So I switched to the Iray one,  so how can I get the rest of the image now?  since it's ony black

2nd.

When I did the normal render.  https://www.dropbox.com/s/1tpk3ai58n3fxty/test 4.png?dl=0

and the Iray:  https://www.dropbox.com/s/5eswhp0te3eukg0/test 1.png?dl=0

The Detail is like 1000x better then the Normal render..

Can you only get that result with Iray,   like the detailed floor ?

In the 3Delight  it looks terrible .

Thank you for your help

 

pkappetein

Are there any good tutorials for lightning in Iray?

Also, is it normal that there is so many details diffecences betweeen the 2 renders?

Walls and Floors are looking 1000x better in iray than in 3Delight

SpottedKitty

Ah... you do realise that lighting is very different between Iray and 3Delight? It looks like the Iray light you set up isn't working at all in 3Delight (not surprising), so all you're left with is the camera Headlight — which is very iffy when it comes to illuminating things at a sharp angle, like that floor. The render you uploaded is pretty much what I'd expect to see from Headlight-only lights.

The Iray render is a lot better, but you seem to be using only the default settings. If you go into the Tone Mapping section of the Render Settings tab, you'll see some parameter names that seem to be controls for a camera, and that's exactly what they are. The default setting for Iray is to "expose" the render as if it was a bright sunny day — that's what the default Environment light is. There is no automatic exposure, you must do all the settings yourself; in Tone Mapping, you have to adjust the Shutter Speed, F/Stop and Film ISO until you get the brightness you want in the finished render.

(If you think this is getting a bit complicated, you're right. Lighting is one of the most important parts of setting up your scene, and it can take a bit of getting used to. If you've ever used a camera with actual controls, not just a fully automatic photo snapper, experience of that will help a lot.)

pkappetein

You are right,  I am a totally newbie as far DA and Rendering.

So you can setup Iray Lighting in 3Delight?  I couldn't find the settings at all.  And  about the Camera. guess I don't know where to select it then..  

Trying to find some good tutorials, but the ones I've seen doesn't seem to cover that stuff.

I'll play with the settings, and see what happens..

But from what your saying I should get the same "floor" quality in 3Delight as well then ???

and for the Iray image

I wanted the lightning that shows in the crappy image, in the Iray,  but that's not possible.. ( I used a light in the scene, assuming that worked for Iray as well)

mjc1016

It's very possible to get that lighting in Iray...in fact, I'm pretty sure it is already what you are wanting, just 'under exposed'...

I ran this through an image editor and adjusted the exposure...

It's mostly there, so adjusting the tone mapping, as SpottedKitty mentioned, should fix the problem.

pkappetein

But, can you the same result also in 3Delight like the floors and walls ?   or only with Iray?

The original image islike a spotlight to the corner, and the rest is darker..  (somehow with 3Delight,  it's completely black

This is how it is in my Daz 3D,  minus the floor is missing (don't know how to show it.

https://www.dropbox.com/s/icabyjmvrs0nv06/example.png?dl=0

 

 

mjc1016

Okay...which set is this?

 

pkappetein

The West Park Ward:    http://www.daz3d.com/west-park-ward

 

mjc1016

I don't have that one...I do have other parts of West Park.

I'll set one up for a 3DL render and show the settings...

pkappetein

That would be awesome..  Thank you so much

I have all the West ward items,  so that will work :)

Really appriciate your help.

 

mjc1016

Ok...

First...make sure the camera headlamp is Off

Then load the default lights that come with the West Park sets.  After they are loaded, flip the UberEnvironment from Occlusion to Bounce..

Then, add some reflection to the floor and wall surfaces (you may want to flip the Lighting Model from Metalic to Plasitc or Glossy Plastic...the Metalic is not quite right for the floor or wall surfaces).

Then after adjusting the light levels (took the two AreaLights down to 100% from the 750% they loaded at and dropped the Distant Light down to 100%, too...)

I ended up with this...

The preload lights are basically just light coming in the windows.

mjc1016

Here's another...

This one drops the levels on the distant and area lights even more and ups the Bounce to 100.

pkappetein

Hi,

Sorry for the late response,   been playing with this,  but got a lot to learn i see.

I couldn't find the floor part..   I found the bones, and some settings,  but not the ones that you showed on the picture, so I skipped that for now.

The "Then, add some reflection to the floor and wall surfaces (you may want to flip the Lighting Model from Metalic to Plasitc or Glossy Plastic...the Metalic is not quite right for the floor or wall surfaces)." 

I got lost with.

So this is what it looks like now: https://www.dropbox.com/s/zm6ctruaygybz5d/test 6.png?dl=0

 

 

mjc1016

The main part of the set is 'locked' so you will need to select the floor in the Scene tab...it will probably be under what ever the main part of the set is called.

Then, you need the floor surface...in the Surfaces tab.  The settings...Lighting Model (should be near the top of the list) and Reflection (closer to the bottom of the list) will be there.   Adding about 10 to 20 % to Reflection Strength should be a closer match to the way the floor was in Iray.

pkappetein

Thank you,  I will look at that.

I did notice that the wall now was different than the other 2 image I uploaded..  does that all depend on the lighning on how a wall looks like ?

 

mjc1016

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